The heat efficiency of an air heater is over 100%. Why?
That is to say, the thermal efficiency changed from 4 to 2, and to 5 degrees below zero, it was the same as that of an electric water heater, plus the power consumption of defrosting, and the overall thermal efficiency was not as good as that of an electric water heater at that time.No matter what is energy-saving or not, it is under certain conditions. Look at your conditions
The thermal efficiency of heat pump water heater electric water heater is better than 4 times higher, but we must remember that the energy efficiency ratio of the heat pump water heater is with the variation of temperature, heating machine nominal is generally measured at 7 degrees temperature, when the temperature reached 0 degrees, the heating up left half
The air energy heater uses only a large amount of free heat energy in the air to consume electricity. It is only the energy that the compressor uses to transport air energy, so the thermal efficiency is as high as 380%-600%
